diff --git a/src/game/Level3.cpp b/src/game/Level3.cpp
index 2da83263e..9a147e5a5 100644
--- a/src/game/Level3.cpp
+++ b/src/game/Level3.cpp
@@ -4792,13 +4792,10 @@ bool ChatHandler::HandleResetLevelCommand(const char * args)
     player->InitTalentForLevel();
     player->SetUInt32Value(PLAYER_XP,0);
 
-    // reset level to summoned pet
-    Pet* pet = player->GetPet();
-    if(pet && pet->getPetType()==SUMMON_PET)
-    {
-        pet->InitStatsForLevel(1);
-        pet->InitTalentForLevel();
-    }
+    // reset level for pet
+    if(Pet* pet = player->GetPet())
+        pet->SynchronizeLevelWithOwner();
+
     return true;
 }
 
diff --git a/src/game/Pet.cpp b/src/game/Pet.cpp
index e8b5bb04e..e7e195581 100644
--- a/src/game/Pet.cpp
+++ b/src/game/Pet.cpp
@@ -340,6 +340,8 @@ bool Pet::LoadPetFromDB( Player* owner, uint32 petentry, uint32 petnumber, bool
         }
     }
 
+    InitLevelupSpellsForLevel();
+
     m_loading = false;
 
     SynchronizeLevelWithOwner();
@@ -653,6 +655,9 @@ bool Pet::CanTakeMoreActiveSpells(uint32 spellid)
 
     for (PetSpellMap::const_iterator itr = m_spells.begin(); itr != m_spells.end(); ++itr)
     {
+        if(itr->second.state == PETSPELL_REMOVED)
+            continue;
+
         if(IsPassiveSpell(itr->first))
             continue;
 
@@ -746,6 +751,7 @@ void Pet::GivePetLevel(uint32 level)
         return;
 
     InitStatsForLevel(level);
+    InitLevelupSpellsForLevel();
     InitTalentForLevel();
 }
 
@@ -994,9 +1000,6 @@ bool Pet::InitStatsForLevel(uint32 petlevel)
     for (int i = SPELL_SCHOOL_HOLY; i < MAX_SPELL_SCHOOL; ++i)
         SetModifierValue(UnitMods(UNIT_MOD_RESISTANCE_START + i), BASE_VALUE, float(createResistance[i]));
 
-    if(cinfo->family)
-        learnLevelupSpells();
-
     UpdateAllStats();
 
     SetHealth(GetMaxHealth());
@@ -1118,7 +1121,7 @@ void Pet::_LoadSpells()
         {
             Field *fields = result->Fetch();
 
-            addSpell(fields[0].GetUInt32(), fields[1].GetUInt16(), PETSPELL_UNCHANGED);
+            addSpell(fields[0].GetUInt32(), ActiveStates(fields[1].GetUInt16()), PETSPELL_UNCHANGED);
         }
         while( result->NextRow() );
 
@@ -1284,7 +1287,7 @@ void Pet::_SaveAuras()
     }
 }
 
-bool Pet::addSpell(uint32 spell_id,uint16 active /*= ACT_DECIDE*/, PetSpellState state /*= PETSPELL_NEW*/, PetSpellType type /*= PETSPELL_NORMAL*/)
+bool Pet::addSpell(uint32 spell_id,ActiveStates active /*= ACT_DECIDE*/, PetSpellState state /*= PETSPELL_NEW*/, PetSpellType type /*= PETSPELL_NORMAL*/)
 {
     SpellEntry const *spellInfo = sSpellStore.LookupEntry(spell_id);
     if (!spellInfo)
@@ -1356,26 +1359,33 @@ bool Pet::addSpell(uint32 spell_id,uint16 active /*= ACT_DECIDE*/, PetSpellState
                 // skip unknown ranks
                 if(!HasSpell(rankSpellId))
                     continue;
-                removeSpell(rankSpellId);
+                removeSpell(rankSpellId,false);
             }
         }
     }
-    else if(uint32 chainstart = spellmgr.GetFirstSpellInChain(spell_id))
+    else if(spellmgr.GetSpellRank(spell_id)!=0)
     {
         for (PetSpellMap::const_iterator itr2 = m_spells.begin(); itr2 != m_spells.end(); ++itr2)
         {
             if(itr2->second.state == PETSPELL_REMOVED) continue;
 
-            if(spellmgr.GetFirstSpellInChain(itr2->first) == chainstart)
+            if( spellmgr.IsRankSpellDueToSpell(spellInfo,itr2->first) )
             {
-                newspell.active = itr2->second.active;
+                // replace by new high rank
+                if(spellmgr.IsHighRankOfSpell(spell_id,itr2->first))
+                {
+                    newspell.active = itr2->second.active;
 
-                if(newspell.active == ACT_ENABLED)
-                    ToggleAutocast(itr2->first, false);
+                    if(newspell.active == ACT_ENABLED)
+                        ToggleAutocast(itr2->first, false);
 
-                oldspell_id = itr2->first;
-                unlearnSpell(itr2->first);
-                break;
+                    oldspell_id = itr2->first;
+                    unlearnSpell(itr2->first,false);
+                    break;
+                }
+                // ignore new lesser rank
+                else if(spellmgr.IsHighRankOfSpell(itr2->first,spell_id))
+                    return false;
             }
         }
     }
@@ -1384,7 +1394,7 @@ bool Pet::addSpell(uint32 spell_id,uint16 active /*= ACT_DECIDE*/, PetSpellState
 
     if (IsPassiveSpell(spell_id))
         CastSpell(this, spell_id, true);
-    else if(state == PETSPELL_NEW)
+    else
         m_charmInfo->AddSpellToAB(oldspell_id, spell_id);
 
     if(newspell.active == ACT_ENABLED)
@@ -1422,26 +1432,33 @@ bool Pet::learnSpell(uint32 spell_id)
     return true;
 }
 
-void Pet::learnLevelupSpells()
+void Pet::InitLevelupSpellsForLevel()
 {
-    PetLevelupSpellSet const *levelupSpells = spellmgr.GetPetLevelupSpellList(GetCreatureInfo()->family);
+    uint32 family = GetCreatureInfo()->family;
+    if(!family)
+        return;
+
+    PetLevelupSpellSet const *levelupSpells = spellmgr.GetPetLevelupSpellList(family);
     if(!levelupSpells)
         return;
 
     uint32 level = getLevel();
 
-    for(PetLevelupSpellSet::const_iterator itr = levelupSpells->begin(); itr != levelupSpells->end(); ++itr)
+    // PetLevelupSpellSet ordered by levels, process in reversed order
+    for(PetLevelupSpellSet::const_reverse_iterator itr = levelupSpells->rbegin(); itr != levelupSpells->rend(); ++itr)
     {
-        if(itr->first <= level)
-            learnSpell(itr->second);
+        // will called first if level down
+        if(itr->first > level)
+            unlearnSpell(itr->second,true);                 // will learn prev rank if any
+        // will called if level up
         else
-            unlearnSpell(itr->second);
+            learnSpell(itr->second);                        // will unlearn prev rank if any
     }
 }
 
-bool Pet::unlearnSpell(uint32 spell_id)
+bool Pet::unlearnSpell(uint32 spell_id, bool learn_prev)
 {
-    if(removeSpell(spell_id))
+    if(removeSpell(spell_id,learn_prev))
     {
         if(GetOwner()->GetTypeId() == TYPEID_PLAYER)
         {
@@ -1457,7 +1474,7 @@ bool Pet::unlearnSpell(uint32 spell_id)
     return false;
 }
 
-bool Pet::removeSpell(uint32 spell_id)
+bool Pet::removeSpell(uint32 spell_id, bool learn_prev)
 {
     PetSpellMap::iterator itr = m_spells.find(spell_id);
     if (itr == m_spells.end())
@@ -1485,6 +1502,27 @@ bool Pet::removeSpell(uint32 spell_id)
         SetFreeTalentPoints(free_points > 0 ? free_points : 0);
     }
 
+    if (learn_prev)
+    {
+        if (uint32 prev_id = spellmgr.GetPrevSpellInChain (spell_id))
+        {
+            // replace to next spell
+            if(!talentCost && !IsPassiveSpell(prev_id))
+                m_charmInfo->AddSpellToAB(spell_id, prev_id);
+
+            learnSpell(prev_id);
+        }
+        else
+        {
+            m_charmInfo->AddSpellToAB(spell_id, 0);
+
+            // need update action bar for last removed rank
+            if (Unit* owner = GetOwner())
+                if (owner->GetTypeId() == TYPEID_PLAYER)
+                    ((Player*)owner)->PetSpellInitialize();
+        }
+    }
+
     return true;
 }
 
@@ -1620,7 +1658,7 @@ bool Pet::resetTalents(bool no_cost)
                 // unlearn if first rank is talent or learned by talent
                 if (itrFirstId == talentInfo->RankID[j] || spellmgr.IsSpellLearnToSpell(talentInfo->RankID[j],itrFirstId))
                 {
-                    removeSpell(itr->first);
+                    removeSpell(itr->first,false);
                     itr = m_spells.begin();
                     continue;
                 }
diff --git a/src/game/Pet.h b/src/game/Pet.h
index 07e1036ce..1b987b8ce 100644
--- a/src/game/Pet.h
+++ b/src/game/Pet.h
@@ -69,7 +69,7 @@ enum PetSpellType
 
 struct PetSpell
 {
-    uint16 active;
+    ActiveStates active : 16;
 
     PetSpellState state : 8;
     PetSpellType type   : 8;
@@ -196,12 +196,12 @@ class Pet : public Creature
         void _LoadSpells();
         void _SaveSpells();
 
-        bool addSpell(uint32 spell_id,uint16 active = ACT_DECIDE, PetSpellState state = PETSPELL_NEW, PetSpellType type = PETSPELL_NORMAL);
+        bool addSpell(uint32 spell_id,ActiveStates active = ACT_DECIDE, PetSpellState state = PETSPELL_NEW, PetSpellType type = PETSPELL_NORMAL);
         bool learnSpell(uint32 spell_id);
         void learnSpellHighRank(uint32 spellid);
-        void learnLevelupSpells();
-        bool unlearnSpell(uint32 spell_id);
-        bool removeSpell(uint32 spell_id);
+        void InitLevelupSpellsForLevel();
+        bool unlearnSpell(uint32 spell_id, bool learn_prev);
+        bool removeSpell(uint32 spell_id, bool learn_prev);
 
         PetSpellMap     m_spells;
         TeachSpellMap   m_teachspells;
@@ -252,4 +252,4 @@ class Pet : public Creature
             assert(false);
         }
 };
-#endif
+#endif
\ No newline at end of file
diff --git a/src/game/SpellEffects.cpp b/src/game/SpellEffects.cpp
index ce4528ec0..c1cfd684d 100644
--- a/src/game/SpellEffects.cpp
+++ b/src/game/SpellEffects.cpp
@@ -3259,6 +3259,7 @@ void Spell::EffectSummon(uint32 i)
 
     spawnCreature->AIM_Initialize();
     spawnCreature->InitPetCreateSpells();
+    spawnCreature->InitLevelupSpellsForLevel();
     spawnCreature->SetHealth(spawnCreature->GetMaxHealth());
     spawnCreature->SetPower(POWER_MANA, spawnCreature->GetMaxPower(POWER_MANA));
 
@@ -4171,6 +4172,7 @@ void Spell::EffectSummonPet(uint32 i)
 
     NewSummon->InitStatsForLevel(petlevel);
     NewSummon->InitPetCreateSpells();
+    NewSummon->InitLevelupSpellsForLevel();
     NewSummon->InitTalentForLevel();
 
     if(NewSummon->getPetType()==SUMMON_PET)
@@ -5967,6 +5969,7 @@ void Spell::EffectSummonCritter(uint32 i)
 
     critter->AIM_Initialize();
     critter->InitPetCreateSpells();                         // e.g. disgusting oozeling has a create spell as critter...
+    //critter->InitLevelupSpellsForLevel();                 // none?
     critter->SelectLevel(critter->GetCreatureInfo());       // some summoned creaters have different from 1 DB data for level/hp
     critter->SetUInt32Value(UNIT_NPC_FLAGS, critter->GetCreatureInfo()->npcflag);
                                                             // some mini-pets have quests
diff --git a/src/game/Unit.cpp b/src/game/Unit.cpp
index 474b6009e..7f150e1df 100644
--- a/src/game/Unit.cpp
+++ b/src/game/Unit.cpp
@@ -10396,20 +10396,30 @@ void CharmInfo::InitCharmCreateSpells()
 
 bool CharmInfo::AddSpellToAB(uint32 oldid, uint32 newid, ActiveStates newstate)
 {
+    // new spell already listed for example in case prepered switch to lesser rank in Pet::removeSpell
+    for(uint8 i = 0; i < 10; ++i)
+        if (PetActionBar[i].Type == ACT_DISABLED || PetActionBar[i].Type == ACT_ENABLED || PetActionBar[i].Type == ACT_PASSIVE)
+            if (newid && PetActionBar[i].SpellOrAction == newid)
+                return true;
+
+    // old spell can be leasted for example in case learn high rank
     for(uint8 i = 0; i < 10; ++i)
     {
-        if((PetActionBar[i].Type == ACT_DISABLED || PetActionBar[i].Type == ACT_ENABLED || PetActionBar[i].Type == ACT_PASSIVE) && PetActionBar[i].SpellOrAction == oldid)
+        if (PetActionBar[i].Type == ACT_DISABLED || PetActionBar[i].Type == ACT_ENABLED || PetActionBar[i].Type == ACT_PASSIVE)
         {
-            PetActionBar[i].SpellOrAction = newid;
-            if(!oldid)
+            if (PetActionBar[i].SpellOrAction == oldid)
             {
-                if(newstate == ACT_DECIDE)
-                    PetActionBar[i].Type = ACT_DISABLED;
-                else
-                    PetActionBar[i].Type = newstate;
-            }
+                PetActionBar[i].SpellOrAction = newid;
+                if (!oldid)
+                {
+                    if (newstate == ACT_DECIDE)
+                        PetActionBar[i].Type = ACT_DISABLED;
+                    else
+                        PetActionBar[i].Type = newstate;
+                }
 
-            return true;
+                return true;
+            }
         }
     }
     return false;
@@ -11399,6 +11409,7 @@ Pet* Unit::CreateTamedPetFrom(Creature* creatureTarget,uint32 spell_id)
     // this enables pet details window (Shift+P)
     pet->AIM_Initialize();
     pet->InitPetCreateSpells();
+    pet->InitLevelupSpellsForLevel();
     pet->InitTalentForLevel();
     pet->SetHealth(pet->GetMaxHealth());
 
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index 096e37697..d86a931cf 100644
--- a/src/shared/revision_nr.h
+++ b/src/shared/revision_nr.h
@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "7837"
+ #define REVISION_NR "7838"
 #endif // __REVISION_NR_H__