Understanding of "Lamb"
Since we are discussing symbols that are Figurative(representative of another reality), as opposed to "Literal"(the Historical/Grammatical meaning of the word) it would behoove us to know what the "lamb" represented, in order to understand the possible 'figurative' understanding of it's 2 horns.
Rev. 13:11,
"Καὶ εἶδον ἄλλο θηρίον ἀναβαῖνον ἐκ τῆς γῆς καὶ εἶχεν κέρατα δύο ὅμοια
ἀρνίῳ καὶ ἐλάλει ὡς δράκων".(TRS 1550)
"And I saw another beast, rising out of the earth, and it had 2 horns, like a lamb, and it spoke like a dragon."
"ἀρνίῳ"(arnio) the word used for 'lamb'is defined in the Thayer's Lexicon as,
ἀρνίον, ἀρνίου, τά (diminutive from ἀρήν, which see) (from Lysias
down), a little lamb, a lamb: Revelation 13:11; Jesus calls his
followers τά ἀρνία μου in John 21:15; τό ἀρνίον is used of Christ,
innocently suffering and dying to expiate the sins of men, very often
in Revelation, as Revelation 5:6, 8, 12, etc. (Jeremiah 11:19;
Jeremiah 27:45 (); Psalm 113:4, 6 (); Josephus, Antiquities 3, 8, 10.)
The connotation is that it isn't merely a male sheep in the process of maturity, but a "little, harmless lamb"; someone who is pure and innocent.
Further proof can be established from Rev. 5:6 where "Ἀρνίον"(Arnion/Lamb), in which the "Lamb" is clearly a picture of Christ, who "innocently, without guile" bore ours sins as the "sacrificial lamb". In the picture of Rev. 5:6, this "Lamb" had 7 Eyes and 7 Horns which we are told are, "the seven Spirits of God sent forth into all the earth."
Meaning of "this" Arnion/Lamb
It is clear from the Context of this passage that "innocence" is an illusion; it speaks like a "dragon" and from the context of Rev. 12:3 and 13:1 "dragon" is representative of "evil authority". It's also important to note that this "Beast" arises out of the "earth", unlike the "sea" from which we are told in Rev. 17:15:
"are peoples, and multitudes, and nations, and tongues."
These(Beast and False Prophet) represent "spirits", as
"the beast that ascendeth out of the bottomless pit",(Rev. 11:7)
as well as
"These both were cast alive into a lake of fire burning with
brimstone."(Rev. 19:20)
They refer to pre-existant demonic forces, rather than human beings who,
"And as it is appointed unto men once to die, but after this the
judgment"(Heb. 9:27)
This "arnion/lamb" who is called the "False Prophet" differs from the 1st Beast, called "Antichrist" in that rather than "speak great blasphemies"(Rev. 13:5), performs 'miracles'(vs 14) in the authority of the Antichrist, and "causeth all"(vs 16) to receive a mark, on their hands, or on their foreheads.
The important thing to note is that he does it "innocently", in other words not with force, but with guile. "Causeth" means he does it over a period of time; and here's the important part: with God's "apparent" blessing. The "maketh fire come down from heaven on the earth in the sight of men is analogous to the ministry of Elijah, who in 1 Kings 19:38, called down the fire of God on his offering, which substantiated his ministry. Therefore "it only seems right" to those witnessing the miracles of this "false prophet" that 'he/it' has true authority in the eyes of God, and how dare one 'question' his authority.
How Is the Lamb a "Beast"
It is important that we 1st understand what "Beast" is in this context: they clearly came from the pit of Hell, and unlike ungodly men who die, and are judged, are sent "alive" to the Lake of Fire. We must remember Jesus's statement when He says,(Matt. 25:41)
"Depart from me, ye cursed, into everlasting fire, prepared for the
devil and his angels."
Hell was created for Satan and his devils, that is their realm. A "Beast" is man(or mankind) who live apart from God. Psalm 49:20 says,
Man that is in honour, and understandeth not, is like the beasts that
perish.
This is comparable to the message of Matt. 25:41; those that act like "goats" perish, those that act like "lambs" enjoy Eternal Life. These 2 Beasts: one which arises out of "mankind", and the other that arises out of the "earth" take the form of those that defy God. Since we are talking about the "lamb with 2 horns", he arises out of the earth because he is "Empirical", he is concerned with the natural senses. We must understand that 'demons' do not perform miracles with the power of God, otherwise Jesus would be incorrect in His response to the scribes and Pharisees in Matt. 12:27-28. This "Beast" is Science, falsely so called(1 Tim. 6:20),
ἀντιθέσεις τῆς ψευδωνύμου γνώσεως(antitheseis tes pseudonymou gnoseos-opposing ideas falsely called knowledge)
whereas the Antichrist(antchristos: against Christ-opposing Christ, per Thayers)
opposes God. This "Beast" attempts to reduce Sacred Scripture to 'myths', using the 'science' of carbon dating to debunk it's claims. It also 'performs' miracles, making men 'awestruck with wonder' and yet it's "knowledge" is from the Tree of the Knowledge of Good and Evil", and not the "Tree of Life". It uncovers the secrets of genetics-yet puts man in peril because it. What is important to understand is that this "gnoseos" exalts Man-and not God.
Science(or science falsely so called) appears gentle, like a lamb, and appears in man's best interest. It 'appears' to be working slavishly to solve mankind's problems, and yet is the means by which the problems came about in the 1st place. Yet it "roars like a dragon" if you challenge it's presuppositions, or it's 'infallible proofs' against the existence of God. It's precepts(Big Bang, Evolution, gender neutrality, to name a few) are taught as dogma, and influence the laws of the land-causing those that disagree(consider the recent Supreme Court decisions-based on "science, falsely so called") to be persecuted, marginalized, and in socialist/communist countries jailed, and executed.
The Two Horns
An adult male sheep(Ram) has horns, the male 'lamb'(depending on it's age) has little 'nubbin' horns which will one day grow. One can conjecture whether or not they are the 'antithesies' to Moses and Elijah, the True Prophets. By definition they cannot be 'human'(though they influence humanity); if one wants to call "science" reason(human) and observation, versus Revelation and Divine Authority-which both Moses and Elijah represented, I suppose a case could be made. The "little lamb" like quality is what I believe is being emphasized, and to understand this "Beast" one must understand 'a lamb, which speaks like a dragon".